Dell plans to expand its Ubuntu PC and notebook offerings due to continued demand Dell has seen for the Ubuntu products, said Mark Shuttleworth, Ubuntu creator. Shuttleworth also founded Canonical, the company responsible for offering support for Ubuntu Linux users.

"What's been announced to date is not the full extent of what we will see over the next couple of weeks and months," Shuttleworth said during an interview. "There are additional offerings in the pipeline," he added.

Dell spokeswoman Anne Camden did not make an official statement to Reuters about future products, but did say that Dell is happy with the response the company has received for Linux. Even though most of the products sold were likely to previous fans of Linux and open source technology, some first time customers also made purchases.

Dell currently offers five products which run the Ubuntu operating system. The company had egg on its face after Dell Ubuntu Linux customers discovered they apparently paid $225 more for an Inspiron 1420 notebook loaded with Ubuntu - Dell quickly fixed the error, changing the price so the Ubuntu version is now $50 cheaper.

Although the Microsoft Windows operating system still controls the PC operating system market, the Linux OS can be considered as Microsoft's biggest threat.